Thread: Flat Battery on D4

Originally Posted by brad72

The tint guys said they only switched on the ignition without starting to open the windows etc .

Why did the tossers leave ignition on ?

well that the strange part, they reckon they only turned it, well pushed the start button for short busts to open/close the windows, so don't quite know what to believe

Well i think i have worked it out. When driving home tonight the clock said 5.50pm, hey i'm home early i thought, but it was actually 6.30pm. That means that sometime this morning the car was flat for 40 minutes. So I think what happened was the ignition button was pressed, the ac fan would of run, the auto headlights would of come on and the radio turned on. This would of flattened the battery in no time?

That would explain why the guys weren't overly surprised when I tried to start the car.

I think i can stop worrying now. I would of been up all night thinking about it otherwise.

That's interesting . If I disconnect the D3's battery for the afternoon
to do something requiring the CANbus off , the radio still has its correct
time , stations , etc when I connect ...........
I'd have thought they'd have switched the headlights off !

Hi Brad72, Just had my 12,000Klm service. My dealer told me that there is to be a recall shortly. What they will be doing is upgrading the battery to a larger one and doing a software upgrade. I am told that this will be on all D4's.

DISCUSSED THE RANGE OF THE KEYLESS ENTRY SYSTEM WITH MY DEALER AND HE WARNED ABOUT THE KEY BEING TOO CLOSE TO THE ENGINE AND THAT CAN CAUSE THE LOW BATTERY CONDITION IF IT GOES ON FOR AN EXTENDED PERIOD. COULDN'T TELL ME how long before it can become a problem but it's something we should all be aware of, especially at home.
I checked mine and it happily locks the car from inside my kitchen!!!!!!!

Originally Posted by DISCO 4

DISCUSSED THE RANGE OF THE KEYLESS ENTRY SYSTEM WITH MY DEALER AND HE WARNED ABOUT THE KEY BEING TOO CLOSE TO THE ENGINE...I checked mine and it happily locks the car from inside my kitchen!!!!!!!

Hi, I am only guessing here, but it may be a different technology at work, so no need to worry too much?

The lock/unlock is likely to be running off a transmitted radio frequency powered by the battery in your remote, designed for longer distances. The car searching for the key is probably a Radio Frequency ID (RFID) with a localised field - sort of like the anti-theft sensors at your local retail shop looking for theft tags, or like the electronic entry to an office building.

The problem there was that the key was too close to the car.

With the keyless technology, having the key that close is effectively like having the key in the II position on the ignition all the time. All the systems are primed, ready for you to hit the 'Start' button.

M